CN101305634A - Process for eliminating interferences in a HSDPA mobile terminal - Google Patents
Process for eliminating interferences in a HSDPA mobile terminal Download PDFInfo
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- CN101305634A CN101305634A CN200680041767.2A CN200680041767A CN101305634A CN 101305634 A CN101305634 A CN 101305634A CN 200680041767 A CN200680041767 A CN 200680041767A CN 101305634 A CN101305634 A CN 101305634A
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- channel
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- hsdpa
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
- H04B1/7103—Interference-related aspects the interference being multiple access interference
- H04B1/7107—Subtractive interference cancellation
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Noise Elimination (AREA)
Abstract
Process of elimination of interferences in a downlink transmission channel between a mobile terminal comprising the resources to receive HSDFA and MBMS service and a base station of a cellular telecommunications network. The process according to the invention comprises the following steps: the network informs the terminal of a list of channels liable to generate interferences on the aforementioned downlink transmission channel; the terminal determines among the aforementioned list the channel that is generating the highest level of interferences and uses the signal of the aforementioned channel to eliminate the aforementioned interferences.
Description
Technical field
The present invention relates to field of telecommunications, relate in particular to a kind of be used for eliminating comprise the processing of interference of portable terminal that is used for receiving the resource of HSDPA and MBMS service by cellular telecommunication network.
The invention still further relates to the portable terminal that comprises the resource that is used to receive HSDFA and MBMS service.
Background technology
In UMTS, the radio interface between terminal and the radio access network (UTRAN, the universal terrestrial radio carrier network inserts) comprises three main protocol layers:
Physical layer (layer 1),
Link layer (layer 2),
Radio resource control (RRC, radio resource control) layer.
Layer RRC is in charge of the signal between UTRAN and the mobile device and is used for the protocol layer 1 of radio interface and the configuration of the resource of protocol layer 2.It also provides the message with signal effect to Non-Access Stratum.
UTRAN provides very big flexibility aspect managing radio resources.According to the various service states of the activity level that depends on relevant mobile device, cause the level of agreement RRC.Guideline is to make unchangeably that according to the demand of mobile device to business radio resources allocation is adapted to mobile device.Agreement RRC can be in two kinds of patterns: standby mode (idle pulley) and connection mode, in standby mode, mobile device is connected, but does not have RRC to connect between mobile device and the UTRAN, in connection mode, mobile device has been set up with the RRC of UTRAN and has been connected.Connection mode is subdivided into 4 kinds of main state: CELL_DCH, CELL_FACH, CELL_PCH and URA_PCH.
State CELL_DCH is characterised in that and gives mobile device with the radio resources allocation that is exclusively used in one or more transfer channels of DCH (dedicated channel) type.Private resource is allocated for the transmission that has the professional of real-time type or be used for mass data.
In state CELL_FACH, there is not dedicated radio resource to be assigned to mobile device.In this state, Common transport channel (RACH, FACH, CPCH are respectively Random Access Channel, forward access channel and CPCH) is used to the transmission between terminal and the network.State CELL_FACH is applicable to the transmission small amount of data, and is not limited in real time.
State CELL_PCH and URA_PCH all are the halted state of agreement RRC when being in connection mode.To the transformation of these states is by networking command after the report that does not for example have for a long time service-user.In these states, mobile device is in the pattern of discontinuous reception (DRX, discontinuous reception), and its main activities is included among the UTRAN monitors and manages its mobility.Before service-user all recovers, RRC must be once more through the CELL_FACH state and carry out renewal to the location among the UTRAN.
In fact, in CELL_PCH or URA_PCH state, when the down link service-user appeared among the UTRAN, it sent beep-page message to mobile device, recovered professional so that this user moves to the CELL_FACH state.Then, mobile device moves to the CELL_FACH state and carries out the step of positioned update (cell update) with same reasons, responds described paging, and afterwards, this user can restart.
For uplink service, the layer RRC of mobile device moves to the CEL_FACH state, and the step with same reasons startup cell update recover the business in the up link circuit, and after completing successfully these steps, business restarts.
RAN WG (the 5th edition) normalized definition of 3GPP group (third generation affiliate group) HSDPA (high-speed downlink packet access) technology, the HSDPA technology is given each user by per second 500 times with the resource allocation of each channel, allows to transmit to terminal by network the data of high flow rate.This operation is to be performed according to modulation during the time interval between two groupings, and has the flow process of the radio link definition of being adopted.
In addition, standard 3GPP (the 6th edition) group is attached to MBMS (multicast/multicast transmits service) service among the standard 3G, to guarantee identical content disseminating to a plurality of addresses.At first, have only when terminal is in state ID LE, CELL_PCH, URA_PCH and CELL_FACH state, just imagine terminal and can receive the MBMS service of being disseminated.Afterwards, plan allows when HSDPA reception chain is not used simultaneously, and, when having only R99DCH reception chain to be used, can receive these services in the CELL_DCH state in this state that is.In addition, the MBMS resource makes terminal may receive other downlink channel in the residing sub-district of this terminal.The channel that is used for the MBMS transmission service is static, and is used for sending for a long time various types of data.These data are positioned at all terminal system ground that disseminate in the zone and receive.
Yet, be arranged in this zone terminal the user may with the data independence of being disseminated.
In addition, the introduction of new HSDPA technology makes group 3GPP define new resource, the new signal carrier in for example new control channel (F-DPCCH), the HSDPA channel and the transmission of voice.Therefore, HSDPA receives chain to be distributed to the probability that is in the terminal in the CELL_DCH state automatically is very big.The HSPDA channel that disseminates can produce very strong interference to the signal specific that the user receives by the downlink channel of sub-district in the network.
Usually, the HSDPA channel is assigned with rather than is dynamically allocated to terminal in the sub-district.The signal relevant with these channels is transmitted to terminal by dedicated channel.This signal produces significant load and reduces its transmission/receiving ability the terminal aspect.
Therefore, expectation limits this load, to improve the quality of reception of terminal to the specific user's of being used for signal.
An object of the present invention is to make terminal can discharge the resource that is used to receive the MBMS data at first, and use d/d resource to receive to be in its data in CELL_FACH state and the CELL_DCH state, thereby improve the quality of reception of terminal in these states.
Another object of the present invention is to make terminal can use HSPDA and MBMS resource to eliminate the effects of the act for the interference of user's signal specific.
Summary of the invention
The invention provides a kind of processing method of eliminating the interference of the portable terminal that comprises the resource that is used for receiving HSDPA and MBMS service in the cellular telecommunication network and the downlink transmission channel between the base station.
The treatment in accordance with the present invention method may further comprise the steps:
-network might be notified to terminal to the tabulation that above-mentioned downlink transmission channel produces the channel that disturbs,
-terminal is determined the channel that produces high interference levels in above-mentioned tabulation, and uses the signal of this channel to eliminate described interference.
Preferably, network sends above-mentioned tabulation to terminal by the channel that is exclusively used in HSDPA and MBMS service.
According to another characteristic of the invention,
-terminal periodic measurement interference level,
-the level and the predetermined threshold value that will record compares, and,
If-the level that records is lower than above-mentioned threshold value, then determine to produce the channel of high interference levels once more, so that consider its geographical position in network.
The invention still further relates to the portable terminal that comprises the resource that is used for being received in HSDPA that cellular radio network disseminates and MBMS service.
According to the present invention, above-mentioned HSDPA and MBMS resource are applicable to the interference for descending transmission channel that elimination produces in the terminal aspect.
According to the present invention, this terminal comprises:
The device that is used for the periodic measurement interference level;
Be used for the device that the level that will record and predetermined threshold value compare, and,
If the level that is used for recording is lower than above-mentioned threshold value, then redefine the channel that produces high interference levels, so that consider the device in the geographical position of terminal in network.
Description of drawings
Can draw other features and advantages of the present invention from the description that is used as non-limiting example below with reference to accompanying drawing, accompanying drawing schematically illustrates the reception chain of the HSDPA terminal of implementing the treatment in accordance with the present invention method.
Embodiment
Below description relate to the concrete example of implementing the treatment in accordance with the present invention method at the portable terminal that is equipped with the resource that is used for receiving HSDPA and MBMS service.
Need know that in CDMA Channel, all users use identical frequency band and discern with a plurality of codes.In UMTS, a user only acts on a code by mobile device, and this resource that just means this kind channel is only used by a user.Yet, the HSDPA technology can be each mobile device and distributes nearly 14 codes, so that all channel resources all are shared, and, can reach 8-10Mbps in the 5MHz bandwidth of transmission flow rate in the WCDMA down link as required dynamically for each portable terminal distributes the transmission flow rate.The increase of this flow rate is to be caused by the following fact: opposite with 1 ' UMTS of the QPSK modulation of " symbol " (perhaps baud) transmission 2 bit informations with use, HSDPA has used the 16QAM modulation more, and its every symbol is passed on 4 bits.Yet, in UMTS, between two groupings of transmission, understand, and in HSDPA, because the acceleration that transmits, this is reduced to 2 milliseconds at interval through 10 to 20 milliseconds.In addition, in WCDMA, transmitted power is handled with the maintenance constant-quality in the base station, and in the HSDPA technology, the base station makes flow rate adapt to transmission conditions enduringly.The HSPDA technology is introduced a kind of new grouping payments mechanism in addition.In fact, usually, when erroneous packet arrived, receiver can be pulverized (crush) and require it to resend to this erroneous packet.In HSDPA, also can ask to resend on the one hand, it can be kept in the memory on the other hand.Based on this principle, when erroneous packet arrives, can there be same risk.This purpose is to utilize the fragment of a plurality of erroneous packet to reformulate errorless grouping.
Fig. 1 schematically illustrates the reception chain of the HSDPA terminal that comprises RF reception antenna 2, on the one hand, RF reception antenna 2 is connected to the first receiver rake (Rake) 4 and the second receiver rake 6, and on the other hand, RF reception antenna 2 is connected to interference estimation block 8.The first receiver rake 4 is connected to correction module 10, and correction module 10 is by the input communication of the subtracter 12 and the second receiver rake 6.Interference estimation block 8 is connected to the module 14 that is used to receive HSPDA and MBMS service.
In operation, in the given sub-district of network, except user's particular data, terminal also receives the signal that for example is used for HSPDA or MBMS service by signal transmission module 14.Concurrently, network will comprise that the tabulation of the code of the channel that may produce disturb downlink transmission channel sends (arrow 20) and gives terminal.The channel that produces high interference levels in the above-mentioned tabulation is determined in the tabulation that utilize to receive, interference estimation block 8, and the code of this channel is sent to the first receiver rake4.The signal that receives by the maximum interference channel is sent to correction module 10.The latter is the signal allocation correction coefficient that is received, and by subtracter 12 this signal is sent to the second receiver rake6.The second receiver rake 6 transmits the output signal that (arrow 30) removed the interference signal that is defined by interference estimation block 8.
In order to consider the geographical position of terminal in network, interference estimation block 8 periodic measurement interference levels, the level and the predetermined threshold value that record are compared, if and terminal then redefines the channel that produces high interference levels when being in the level that records in the network and being lower than the reposition of above-mentioned threshold value.
Claims (6)
1. eliminate the base station of cellular telecommunication network and the method for the interference in the downlink transmission channel between the portable terminal for one kind, described portable terminal has the resource that is used to receive HSDPA and MBMS service, and described method feature is following steps:
Described network may be notified to described terminal to the tabulation that described downlink transmission channel produces the channel that disturbs; And
Described terminal determines that from described tabulation which channel produces high interference levels, and uses the signal of described channel to eliminate described interference.
2. method according to claim 1, wherein, described network sends described tabulation to described terminal by the channel that is exclusively used in HSDPA and MBMS service.
3. method according to claim 1, wherein,
Described terminal periodic measurement interference level;
The level and the predetermined threshold value that record are compared; And
If the described level that records is less than described threshold value, determine once more that then which channel is just producing high interference levels, so that consider its geographical position in described network.
4. portable terminal, described portable terminal comprises and is used for being received in the HSDPA that cellular telecommunication network broadcasts and the resource of MBMS service, and described terminal feature is: described HSDPA and MBMS resource are adapted to eliminate the interference to descending transmission channel that produces in described terminal.
5. terminal according to claim 4 is characterized in that: described terminal comprises and being used for from the channel of the tabulation that provided by network, determines to produce the device of the channel of high interference levels.
6. terminal according to claim 5 is characterized in that: described terminal comprises:
The device that is used for the periodic measurement interference level;
Be used for the device that the level that will record and predetermined threshold value compare; And
Changed when the position of network if be used for described terminal, determined which channel is just producing the device of high interference levels.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0553379 | 2005-11-08 | ||
| FR0553379A FR2893211A1 (en) | 2005-11-08 | 2005-11-08 | METHOD FOR REMOVING INTERFERENCE FROM A HSDPA MOBILE TERMINAL |
| PCT/JP2006/322424 WO2007055300A1 (en) | 2005-11-08 | 2006-11-02 | Process for eliminating interferences in a hsdpa mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101305634A true CN101305634A (en) | 2008-11-12 |
| CN101305634B CN101305634B (en) | 2014-09-03 |
Family
ID=36693195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200680041767.2A Expired - Fee Related CN101305634B (en) | 2005-11-08 | 2006-11-02 | Process for eliminating interferences in a HSDPA mobile terminal |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8200160B2 (en) |
| EP (1) | EP1946597B1 (en) |
| JP (1) | JP4900844B2 (en) |
| CN (1) | CN101305634B (en) |
| DE (1) | DE602006019303D1 (en) |
| FR (1) | FR2893211A1 (en) |
| WO (1) | WO2007055300A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2893210A1 (en) * | 2005-11-08 | 2007-05-11 | Nec Technologies Uk Ltd | METHOD FOR CONFIGURING RADIO RESOURCES IN A MOBILE TELECOMMUNICATION NETWORK |
| JP6575681B2 (en) * | 2016-05-16 | 2019-09-18 | 富士通株式会社 | Wireless communication system, base station, and terminal |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5649303A (en) * | 1994-09-02 | 1997-07-15 | Motorola, Inc. | Method and apparatus for reducing interference among communication systems |
| GB2341757B (en) * | 1998-09-21 | 2003-07-02 | Fujitsu Ltd | Code-division multiple access mobile comunications networks |
| SE521227C2 (en) * | 1999-02-22 | 2003-10-14 | Ericsson Telefon Ab L M | Mobile radio system and a method for channel allocation in a mobile radio system |
| JP3510589B2 (en) * | 2000-12-15 | 2004-03-29 | Ｎｅｃエレクトロニクス株式会社 | Cell search method and cell search device |
| EP1386406A4 (en) * | 2001-03-30 | 2009-06-03 | Science Applic Int Corp | Multistage reception of code division multiple access transmissions |
| US7012971B2 (en) * | 2001-05-14 | 2006-03-14 | Mediatek Inc. | Channel quality assessment method and system for performing the same |
| US20030125040A1 (en) * | 2001-11-06 | 2003-07-03 | Walton Jay R. | Multiple-access multiple-input multiple-output (MIMO) communication system |
| US7787518B2 (en) * | 2002-09-23 | 2010-08-31 | Rambus Inc. | Method and apparatus for selectively applying interference cancellation in spread spectrum systems |
| JP3840412B2 (en) * | 2001-12-28 | 2006-11-01 | 株式会社日立製作所 | Wireless terminal device |
| US7796631B2 (en) * | 2002-07-09 | 2010-09-14 | Qualcomm Incorporated | Method and system for a multicast service initiation in a communication system |
| US7751843B2 (en) * | 2002-07-29 | 2010-07-06 | Qualcomm Incorporated | Reducing interference with a multiple format channel in a communication system |
| US7869399B2 (en) * | 2003-01-06 | 2011-01-11 | Interdigital Technology Corporation | Method and apparatus for controlling the distribution of multimedia broadcast services |
| JP4176522B2 (en) * | 2003-03-25 | 2008-11-05 | 富士通株式会社 | Interference reduction device |
-
2005
- 2005-11-08 FR FR0553379A patent/FR2893211A1/en active Pending
-
2006
- 2006-11-02 CN CN200680041767.2A patent/CN101305634B/en not_active Expired - Fee Related
- 2006-11-02 EP EP06832477A patent/EP1946597B1/en not_active Expired - Fee Related
- 2006-11-02 JP JP2008523053A patent/JP4900844B2/en not_active Expired - Fee Related
- 2006-11-02 DE DE602006019303T patent/DE602006019303D1/en active Active
- 2006-11-02 US US12/092,203 patent/US8200160B2/en not_active Expired - Fee Related
- 2006-11-02 WO PCT/JP2006/322424 patent/WO2007055300A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| EP1946597A1 (en) | 2008-07-23 |
| FR2893211A1 (en) | 2007-05-11 |
| DE602006019303D1 (en) | 2011-02-10 |
| EP1946597B1 (en) | 2010-12-29 |
| US20090068952A1 (en) | 2009-03-12 |
| CN101305634B (en) | 2014-09-03 |
| JP2009515374A (en) | 2009-04-09 |
| US8200160B2 (en) | 2012-06-12 |
| JP4900844B2 (en) | 2012-03-21 |
| WO2007055300A1 (en) | 2007-05-18 |
| EP1946597A4 (en) | 2009-08-12 |
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